Osram Sylvania Inc.

Other

Harold Rothwell, Jr

Renaud Richard

Louie Veiga

Thomas E Peters

Andrew Johnsen

Lori R Brock

Jason J Li

Randall D Brown

David M Hrubowchak

Kailash C Mishra

Jean M Evans

Phillip R Whitt

Mary Berger

Nikolay Natchev

A method of making a subassembly () for a PAR lamp () comprising the steps of: (a) providing a base () including a cup-shaped portion () with a top edge () having an extended flange () projecting therefrom; (b) providing a plurality of electrical contacts () and inserting the contacts into appropriate locations () in a bottom () of the cup-shaped portion (); (c) providing a lamp capsule () including a light source () having dependent leads () projecting from a base end (); (d) inserting the base end () of the lamp capsule () into the cup-shaped portion () and affixing the dependent leads () to the electrical contacts (); (e) providing a reflector () having a funnel-shaped body () with a substantially tubular neck (); (f) filling the cup-shaped portion () with a liquid cement () to a depth that covers the base end () of the lamp capsule (); (g) fitting the reflector () over the lamp capsule () so that the tubular neck () is submersed in the liquid cement (); and (h) heating the subassembly () to fix the reflector () in place.

PAR lamp and method of making same

An ultraviolet enhancer (UVE) holder () may be configured to attach a UVE () having an outer envelope () to an electrical lead () of a lamp () and to retain the UVE () within the lamp () in a desired position. The UVE holder () may include a plurality of turns () comprising a first turn () and a final turn (). The first and final turns () may have a substantially similar inner diameter (D) defining a through passage () shaped to conformingly receive the outer envelope () of the UVE (). The UVE holder () may further include a first leg () depending from the first turn (), wherein the first leg () may have a first distal portion () remote from the first turn () defining a first attachment region () adapted for attachment to a lamp capsule electrical lead ().

Ultraviolet enhancer (UVE) holder

An integrally ballasted lamp assembly () including a spacer disk () disposed in a lamp receptacle cavity () between a lamp () and the bottom () of the lamp receptacle (). The disk () may be configured to contact connector clips () coupled to the bottom () of the lamp receptacle to positively align the clips () for connection to a ballast circuit disposed on a PCB (). The disk () may also, or alternatively, at least partially occlude connector clip openings () in the bottom () of the lamp receptacle () for hindering the flow of uncured cement () through the openings (), and may also, or alternatively, provide a thermal barrier between the lamp () and the lamp receptacle ().

Integrally ballasted lamp assembly including a spacer disk

A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The ignition method includes enabling the oscillator such that the oscillator provides the lamp with a pulse train comprising a rapid series of short ignition pulses, cools for a period of time, and provides an addition pulse train to the lamp if necessary to ignite the lamp. When the lamp ignites, the ballast maintains enablement of the oscillator.

Aggregate ignition method in high frequency metal halide lamps

A PAR lamp () has a body () with an internal reflector surface () disposed about a longitudinal axis (). A cavity () is provided at one end () of the body () and an arc discharge tube () that provides a substantially spherical light source is positioned in the cavity () and disposed on the longitudinal axis (). A cover receiving opening () is provided at a second end () of the body and a cover () closes the cover receiving opening (). A plurality of spiral facets () is formed on the internal reflector surface (), the plurality of spiral facets () being sufficient in number to increase the maximum beam candle power and decrease the beam angle when compared to faceted lamps having a lesser number of facets. The number of facets is equal to or greater than 75 and preferably is 100.

Faceted par lamp

Reflector lamp

Arc tube ( ) has a bulbous body ( ) with a hollow center portion ( ) and opposite ends ( ). Each of these ends has a cylindrical terminal-receiving section ( ) extending therefrom. The hollow center portion ( ) has an internal length A and an internal diameter B that provides an aspect ratio of less than 5 and an outer surface area to inner surface area ratio, measured in square units, of less than 1.5. Electrodes ( ) and ( ) are hermetically sealed in the terminal-receiving sections ( ). The lamp uses less than 7 mgs of mercury. The low pressure operation allows the use of the arc tube in lamps without a shroud and the low mercury allow the lamp to pass TCLP requirement and be conventionally landfilled.

Reduced mercury ceramic metal halide lamp

A phosphor coating for gas discharge lamps is provided. The phosphor coating contains a nano-size phosphor which promotes adherence of the primary phosphor to the glass envelope. The phosphor coating is applied to the interior surface of the gas discharge lamp using an aqueous suspension containing the primary phosphor, the nano-size phosphor, and an organic binder.

Growing community of inventors

Hopkinton, NH, United States of America

Harold Rothwell, Jr